Hook lock



May 28, 1929. D F N 1,715,192

HOOK LOCK Filed Sept. 7, 1928 ATTORNEY Patentecl May 28, 1929.

uurrsn stares DAN renew, or sna'r'rnn, wnsnine'ronf noon Application filed September A further object of the invention consists in the provision of a key. member for the lock ing device. v

l Vith the above and other objects in View, the invent-ion further consists of the following novel features and details of construction, to be .hercinafter more fully described, illustrated in the accompanying drawing and pointed out in the appended claims.

In the drawing Figure 1 is a side elevation of a hook partly in section illustrating the mounting and connection of the invention therewith. v

Figure 2 is a front elevation of the invention as applied upon the hook.

Figure 3 is a side elevation of the hook with the locking mechanism disposed in an open position.

Figure 4 is an elevation of the hook and locking mechanism taken at right-angles. to the illustration in Figure 3 of the drawing.

Figure 5 is a rear elevation of the invention per se. i

Referring to the drawing in detail, whereresponding parts, the'reference character 10 indicates a conventional form of hook having an attaching shank 11 provided with an opening 12 adapted to accommodate the end of a cable, not shown.

The invention consists in the provision of a plunger pin 13 adapted for reception within a horizontal bore 14 in the shank 11 of the hook 10 in conjunction with the head 15 therefor. A compression spring 16, encircling that portion of the plunger pin 13 within the bore 14:, is adapted to engage the innermost side of the head 15.

A plate member 17 having aneccentrically located oval-shaped socket 18 therein adapted to accommodate the outermost end of the plunger pin 13, is provided with an enlarged countersunk entrance 19, the purpose of which in like characters of reference denote cor- I will be presently apparent. A key 20, car- I Look.

7,1928. Serial No. 304,549.

ried upon the outer side of the plate 18, is provided with an enlargement, 21 .within which the outermost end ofthe'plunger pin 13 is projected. IA cotter .key or other retaining element, suchas indicated at 22,is passed 60. horizontally through the outermost end of the plunger pin 13 and registering elongated" slottedportions 23 inthe enlargements 21'.

A locking pin 24, carried upon the inner surface of the plate member 17, is adapted for reception :within a slot. or portion removed, asindicatedat 25, in the shank 11. As noted, the slot or portion removed 25, is extended entirely through saidshank, the purpose of which will be presently apparent.

. A. projection 26,- carried upon'theend of h l c g pin 2% is yieldingly retained in contacting engagement with a shoulder portion 27 within the s1ot25 by the compression V spring 16. Y An extension 28, depending fromthe lower and outermost portion of the key 20, is adapted for reception Within acut-out portion 29 in the free. end of the hook to close the eye thereof. 7 7

When it is desired to open the eye to insert the yoke end of a cable member, not shown, the key 20 is grasped within the finger engaging portion 30 and shifted in adirection.

to dispose the extension'28 within the bottom v I of the cut-out portion 29. This movement is permittedby the loose connection between the 'key' at its connection ofthe pin 13 through the intrumentality of the slotand pin connection.

Within the slot 25.; I i

The key 20 isthen lifted upwardly against the tension of the compression spring 16 to '95 7 much as it is apparent-from the disclosure of the invention that the same could be employed'equally and effectually as well upon other forms of Work.

The invent-ion is susceptible of :various- J changes in its form, proportions and minor. details of construction, and the rightls herein reserved'to make such changes asproperly 1 10 r I 7 0, The projection 26upon'the locking pin 24: will thus be released from the shoulder 27 fall within the scope of the appended claims. Having thus described the invention, what is claimed is v the plate being adapted to move the latter and the locking pin therefor toward and away from the entrance of the hook.

2. A lock for use upon hooks comprising'a plate member located adjacent the attaching shank therefor,a plunger pin included upon the shank and having connection with the plate, a plunger pin included upon the shank and having swivel connection with the plate, a spring element 'mounted upon the pin adapted to resilientlyietain the plate against the shank, a locking pin carried by the plate adapted for engagement with the shank, and a key included upon the outer portion of the plate being adapted to shift the latter and the locking pin toward and away from the entrance of the hook.

3. A lock for use upon hooks comprising a plate member located adjacent the attaching shank therefor, aplunger pinmounted for reciprocating action within a horizontalbore in said shank,'the end of the plate adjacent i the adjacent portion of the" plate to normally retain the latter flushagainst the adjacent side of the shank, a locking pin carried by the plate, the shank having a slot includin a shoulder engageable with the locking pin,"-

the extremity of the hook having a cut-out portion, an extension projecting from the free end of the plate adapted for reception within the cut-out portion in the extremity ofthe hook, and a key carried by the plate permit ting disengagement of the plate when same is shifted downwardly, outwardly and laterally independently of the shank.

In testimony whereof I-aflix my signature.

,i-nA'n FORTIN. 

